Tetrapeptide PKEK

Product Name
Bioactive tetrapeptide Pro-Lys-Glu-Lys (PKEK), acetate salt
Product Description
Bioactive tetrapeptide PKEK, has proven skin-lightening benefits on skin discoloration from melasma and postinflammatory hyperpigmentation. The tetrapeptide PKEK can exert skin whitening effects based on one in vitro and four double-blinded vehicle-controlled in vivo studies. PKEK treatment significantly inhibited UVB-induced upregulation of genes encoding for IL-1 alpha, IL-6, IL-8, TNF-alpha as well as POMC and tyrosinase in healthy volunteers.
Product Quantity
5 mg
Catalog Number
Molecular Weight
Pro-Lys-Glu-Lys (PKEK), acetate salt
  • 98 Units in Stock

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